Sharpening device



Nov. 18, 1930'. E. A. BALTZELL 1,781,957

SHARPENING DEVICE Filed Jam 12, 1929 INVENTOR ATTORNEY Patented Nov. 18, 1930 Y UNIT D S AT S EDMUND A. BALTZELL, or .PonrLAnn, OREGON I SHARPEVNINGVVDEIVVICE I Application filed January 12, 1929. 7 Serial No; 332,102.

10 tween which the blade to be sharpened may be clamped. The sharpening faces ofthe body element aremadeof a hard material,

as casehardened steel, toresist the filing action or the honing action; The sharpening pose of this'is to enable an inexperienced operator topositively sharpen the cutting vfaces of the scissors to an accurately and true beveled edge. s 7

One of the objects of myzdevice is to procost" and'throughthe use of which an inertperienced operator can maintain the cutting faces of the scissors or cutting implements in firstjclass operatingcondition; T V v -A further-object of my device resides in a simplified construction adapted to being held in-the hand of theoperator for sharpening,

and having associated "therewith a simple in the'device to be sharpened and having a true hardened bevel surface that enables the sharpener to reduce the cutting edge. ofthe cuttingimplement to true bevel and alignment 7 V 1- V A still further'object of my device is to provide ineansto hold scissors andthe like while being honed or otherw'ise sharpened, whereby the blades are clamped in' certain other;

nate the possibility of ruining the bevels at i the cutting edges of the .instrument being sharpened, which is an important and essential element-tomaintaimr The aligned beveled edges of theside'walls of my sharpening device provide a correct and positive sharpening angle by which the instruments to be sharpened is enabled to maintain'the faces are beveled andrin' alignment. The pur dueloss oftime and'efiort. clamping device for clamping the blade with 'which accompany and specifications predetermined positions with relation to each vice. r

proper beveled edges irrespective of the in experience of the, operator.

A further' object of my device resides in 1- beveling the edges of the sidewalls and align ing them for the purpose of providing'a positive sharpening angle for guiding the'abrad- --ingfielement and for preventing the application of the abrading el'ementupon the edges of the instrument being sharpened longer than is necessary or vdesirable'to'r the proper r ma'intenance of the beveled edges of the instrument;

A still'further object of myi device resides in making the beveled surfaces of material adapted to resist abrasives and enabling the device to have at all times a truevbeveled surface' thereby providingaccurate means by which the cutting edges or the cutting in- --str'ume nt' can be sharpened without the pos- V ,sibility ofspoiling vide an eflicient fdevice inexpensive at first] a i; a

. A further object ofmy device is topro vide'meanswhereby the. operator maybe the beveled edges of the cu'ttin gelementx guided-in aligningrthe cutting edges with i the beveled edges oifthe device without 1m:

Withtheseand incidental objects in view,

the invention consists inicertaininovel features ot-construction and combination of inaft'er shown with reference to the drawings form a partqof this In the drawings:

Fig. 1 is a: perspective vice illustrating within the'device, V I r "Fig. '2 is a longitudinal, sectional view,

end view otthefdezferredform of embodiment ofwhich' is here- 1 pair of scissors clamped 1 taken-on--linex22 of Fig..1,'flooking in the Another, object ofmy device is to-elimi direction indicated. The line of 'sight is shown in dotted position torillustrate the -purpos'e vof the 1 line disposed longitudinally Fig.; 3 is side view'of the assembledde- Fig. 4 is a top, plan View of the mechanism, illustrated in Fig. 8.

Fig. 5 is a longitudinal, sectional View, taken on line 5-5 of Fig. 4, looking in the direction indicated.

F ig. 6 is a cross section view, taken on line 66 of Fig. 3, looking in the direction indicated.

Fig. 7 is a perspective, rear view, of the assembled device, the same being made to illustrate the off-set disposed within the side wall, to accommodate the shear blade, being sharpened, that is disposed within a depression that is disposed in the oppositely disposed side wall of the body element. Fig. 8 is a rear side View ofvthe, device, illustrating the off-set in the rear side wall against which the blade to be sharpened is clamped against the inner wall of the side. The offset being shown to accommodate the shear blade not being sharpened.

Like referencecharacters refer to like parts throughout the several views. v

I preferably form my device of a body element 1, having upturned side walls 2 and 3, spaced apart tojpermit the placing of acutting implement blade 4, therebetween. The blade is held by-arly suit-able clamping means, as by a thumb screw 5, the thumb screw 5 being in threadechrelationship with the upturned bracket'6, disposed upon one side of the body element. I form my device having two bevel surfaces 7 and 8 in alignment, the bevels are so placed as to permit the giving to the blade to be sharpened the greatest cutting value by getting properly beveled cutting edges. An offset 9, is disposed within one of,the' side walls of the body element into which the blade lOofthe cutting implement not ibeing-sharpened is,

or may be placed so that the surface 11 of theblade to-be sharpened may be brought into intimate contact with the inner surface 12 of theside wall, 3. Ihave found best results obtain wherein the top portion 9A is cut away to accommodate the clamping element 9B outwardly extending from the blade,

In order to facilitate the placing of the blade to be sharpened in precise position, I have found good results obtain wherein parallelly disposed notches 13 and 14 are formed longitudinally ofthe upper surface 7- of the'side wall 3, of the upper wall so that the user of the device may place the blade in alignment with oneof the notches thereby facilitating the placing of the same in themanner to require the reduction of a minimum amount of the cutting blade-to reduce the same to bevel and alignment I have illustratedin .Fig. Qthe use of the alignment line or notch. This enables the user to place the blade to be sharpened in'position quickly and easily. A fine line placed near the inner edge of the bevel surface 7 will give excellent results and when used for blades requiring a minimum of reduction should be used, and where the blade is in relatively bad condition one of the other lines should be used. A part of the side wall 2 is cut away, as illustrated at 15, in order that the thumb of-the operator may be made to grasp the body of the device and the handle 16 of the blade not being sharpened. The cutout 17 ismade to facilitate the placing of the shears or cutting implement within the device to be sharpened." After the device has been formed and trued to surface, the same is then casehardened and more particularly case-hardened upon the surfaces 7 and 8 to prevent the reduction of the device when the cutting blade is being filed or honed. The device may be madeof sheet stock, and the body portioncan be made of asingle piece-of metal. The offset 9 should'be sufficiently offset to accommodate the shears having a maximum thickness of the blade not being sharpened, in order that the cutting blade to be sharpened may be made to intimately contact against the inner wall 12, against which the blade is clamped.

,, While the form of mechanism herein shown and described is admirably adapted to fulfill the objects primarily stated, it is to be understood that it is not intended to confine the invention to the one-form 'of embodiment hereinshown and described, as it is susceptible of embodiment in various forms, all coming within the scope of the claims which follow: 7

IVhatIclaim'im; f f .1. In a device of the class described, the combination of a body element havinga base and side walls spaced apart and extending upwardly therefrom, there being case'- hardened beveled surfaces terminating the upper edges of the side walls and'in regiss terable alignment with each other, and an" oifset'dis'posed in one of the side wallsjfor permittingjthe blade to be sharpened to .be brought into intimate contact with the inner surface of one of said walls and to accommodate the blade not'being. sharpened and means for; clamping the device to be sharpened relative to the body element. Y 2

2. In a device of the class described, the combination of a body element having a base and side walls spaced "apart and extending upwardly. therefrom, there being .casehardened beveled surfaces lying in the same plane, terminating the upper surfacesofthe side Walls, one of said surfaces having one or more grooves running i longitudinally thereof, and an offset disposed inioneiof the side walls adapted to permit the blade being treated to be placed in intimate-contact with r voneofsaid walls and-tofholdthe blade not being treated, andzthe'oppositely disposed side wall'being cutaway for'aportion of its len th and means for clamping a devicefto be sharpened relative to the bodyieleinenta T;

3. In a device of the class described, the combination of a one piece body element, there being a channel running longitudinally of the body element to form oppositely disposed side walls, hardened bevel surfaces registrably aligned terminating the upper edge of each of the side walls, and one or more grooves running longitudinally of one of the bevel-surfaces, one of the side walls having an offset disposed therein to receive the blade of the device not being sharpened and to permit the placing of the blade. being treated in intimate contact with the wall, the oppositely disposed side wall being cut away for a part of its length to facilitate the admittance of the device to be sharpened within the device and means for clamping one of the blades relative to the body element.

EDMUND A. BALTZELL'. 

